PHY settings for QCA9377-3 based module

Bryce Allen bryce at
Fri Oct 22 07:09:22 PDT 2021

Use the "iw" command as root, something like this, assuming 'wlan0' is 
the device name. To figure out your wireless device name, you can do 'ip 
link' to see a list of interfaces and the wireless one should be pretty 

# get current txpower
$ iw dev wlan0 info | grep txpower
      txpower 22.00 dBm

# set
$ iw dev wlan0 set txpower fixed 2000
$ iw dev wlan0 info | grep txpower
      txpower  20.00 dBm

# set back to auto
$ iw dev wlan0 set txpower auto

Note that increasing txpower may be limited by local regulations, `iw 
reg get` will show current region. There are region free patches 
floating around.

Note the confusing difference in units for display (dBm), and setting 
(mBm), factor of 100 difference for some reason?

See also 'man ip', 'man iw', and 'iw help | less'

On 10/22/21 07:44, Wadepohl, Wolfram wrote:
> Hi,
> I'm a complete newbie to linux wireless and want to know, how I can set transmit power and antenna gain for the 8device RedBean (QCA9377-3 based)?

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